Experimental autoimmune encephalomyelitis (EAE) is a murine autoimmune disease used to study multiple sclerosis (MS), a human inflammatory demyelinating disease of the central nervous system. Genistein, an isoflavonoid phytoestrogenic compound found in soy, is known to reverse clinical signs of EAE. Although genistein has some potential in clinical application, it has some disadvantages related to its chemical structure, such as rapid in vivo metabolism and a fast decline in serum after oral administration. The present work investigates the treatment of EAE by using 7-O-tetradecanoyl-genistein (TDG), a more lipophilic analog of genistein obtained by esterification. The clinical course of EAE was investigated in C57Bl/6 mice immunized with myelin oligodendrocyte glycoprotein peptide (MOG)(35-55) in complete Freund's adjuvant supplemented with Mycobacterium tuberculosis H37RA. After 14 days of MOG immunization, mice were treated with TDG for seven days. Numbers of IL-17-producing cells and Foxp3 by CD4(+) T cells and CTLA-4 expression by CD3(+) T cells from brain were determined by flow cytometry. Levels of IL-6, IFN-γ and IL-10 were evaluated by ELISA. Brain sections were stained by hematoxylin and eosin method. The data obtained indicate that TDG treatment ameliorates the clinical signs of EAE, which correlates with a decrease of IL-17-producing cells and an increase in Foxp3(+)CD4(+) cells in the brain. TDG is also shown to enhance IL-10 production and CTLA-4 expression and to reduce IFN-γ and IL-6. Altogether, these findings suggest an immunomodulatory therapeutic role for TDG in EAE and multiple sclerosis.
Multiple sclerosis (MS) shows distinct clinical courses. Experimental autoimmune encephalomyelitis (EAE), a model to study multiple sclerosis, can be induced by different protocols, which show distinct cytokine and antibody production. The factors involved in this heterogeneity remain unclear. The relevance of MOG concentration in triggering a regulatory response in the chronic model of EAE is imprecise. The aim of this study was investigate if 100 or 300 μg of MOG(35-55) could induce different EAE profiles. Modifications in the concentration of MOG were able to change the patterns of chemokines, cytokines, percentage of cells, inflammatory infiltrate and the development of a regulatory response. However, these changes were unable to modify the intensity of response, which explains the chronic progression of the disease in both concentrations. The results presented in this study contribute to understanding the intricate mechanisms that trigger EAE and provide insights into the pathogenesis of various forms of MS.
Although catatonia is a well-known psychiatric syndrome, there are many possible
systemic and neurological etiologies. The aim of this case report was to present
a case of a patient with cerebral venous sinus thrombosis and infarction in
which catatonia was the clinical manifestation of a possible nonconvulsive
status epilepticus. To our knowledge, only one such case has been reported in
the literature, which had a simplified diagnostic investigation. It is important
to correctly recognize the organic cause underlying catatonia in order to treat
the patient as soon as possible thereby improving outcome. Therefore, physicians
need to update their knowledge on catatonia, recognizing that it can be part of
a psychiatric or neurologic condition.
Neurocysticercosis is a neglected and usually poverty‐related disease of high public importance. The mechanisms by which the calcified lesions cause epilepsy are not known, but have been attributed to residual perilesional gliosis or an inflammatory process. This case shows that an inflammatory response to a calcified granuloma may be associated with the development of epilepsy. The increase in glutamate and kinin B1 (pro‐epileptogenic) receptors added by reduced expression of kinin B2 (anti‐epileptogenic) receptors may explain the chronic epileptogenesis associated with the lesion, corroborating the hypothesis of inflammatory mechanisms involved in the pathophysiology of epilepsy in these patients.
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